Paper-feeding mechanism for typewriting machines



L. JENSEN.

PAPER FEEDING MECHANISM FOR TYPEWRITING MACHINES.

APPLICATION FILED JUNE 3.192]- I L43697 Patented Nov. 21, 11922 3SHEETSSHEET I w haefiaiar LOU|5 JENSEN L. JENSEN.

PAPER FEEDING MECHANISM FOR TYPEWRITING MACHINES.

APPLICATION FILED .IUNE 3,1921.

Patented Nov. 211, 1922 3 SHEETSSHEET Z.

L. JENSEN.

PAPER'FEEDING MECHANISM FOR TYPEWRITING MACHINES.

APPLICATION F-ILED JUNE 3.192|.

Patented Nov. 21, 1922.

3 SHEETSSHEET 3.

J/ZZWZ 0 a L0 15 JENSEN Patented Nov 21, "@220 umrsstareslllthlltl?earner @FFlQi-B LOUIS JENSEN, OF CHICAGO, ILLINOIS, ASSIGNOR TO UNITEDAUTOGRAEHIC REGISTER (30., OF CHICAGO, ILLINOIS, A CORPORATION OF?ILLINOIS.

- PAPER-FEEDING MECHANISM FOR TYIPEWRITING FMLCHINES.

Application filed June 3, 1921.

To all whom it may concern:

Be it known that I, LOUIS JENSEN, a citizen of the United States,residing at Chicage, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Paper-Feeding Mechanismfor Typewritin Machines, of which the following is a fulfi clear,-andexact descri tion.

y invention relates to improvements in typewriting machines andparticularly to means for feeding continuous strips of paper therefrom,step by step.-

The object of my invention is to provide mechanism which can be attachedto the carrier of either a new or an old typewriting machine to withdrawtherefrom step by step sections of a continuous strip of paper, ofpredetermined lengths which usually have the same forms printed uponthem and are provided with series of correspondingly locatedequi-distant postholes near the tops of or advanced edges of the saidprinted forms.

This I accomplish by the means hereinafter fully described and asillustrated in the drawings in which corresponding parts are indicatedby the same reference numerals. 1

In the drawings:

Figure 1 is a side elevation of the upper portion of thelsupportingframeof a typewriting machine, and an end view of the carrier, with thesupport for the ribbonwheels broken away, and with my improvementsapplied thereto. v

Figure 2 isa plan view of approximately one half of the same.

Figure 3 is a'front elevation of the carrier removed from its support,and with my improvements applied thereto.

Figure 4 is a vertical transverse section taken on dotted line 1,. 4,Figure 2, looking in the direction indicated by the arrows.

Referring to the drawings, 5 represents the supporting-frame of myinvention which is constructed and designed in any suitable manner tosupport the carrier so that. it can reciprocate back and forth, andaccommodate and support the type-lettersand keys for op erating the same(which are not shown), all contained in any of the well-known typewriting machines.

The carrier to which my improvements are attached may be constructedsimilar to the carriers of any of the type-writing machines now inextensive use, but, for the purpose of describing my invention thecarrier of the typewriting machine, which I have selected is, as shownin the drawings, and is provided with end-frames 6, 6, the forwardportions of which are connected by a cross-bar 7. This cross-bar has alongitudinal groove or runway in its upper surface, in whichbearing-balls, 8, are placed that aresupported by and run in asimilarrunway 9, in a suitable track attached to the supporting-frame 5. Thebodyof these enduframes extend to the rear of cross-bar 7, a

suitable distance, and have arms 10 project ing from their upper rearportions, and these arms have the ends 11 of rearwardly extendingbrackets 12 securely fastened thereto that have bearings in their rearends for the rear ends of the parallel legs 13 of a feeding frame theforward ends of which latter are bent toward each other, as shown inFigure 3, and connected bya transverse member or head 14, substantiallyas shown in the drawings.

The rear end of one of the legs 13 of said extracting frame, (preferablythe right hand leg), is provided with downwardl extending branch 15, andthe lower end or this branch is connected to the adjacent leg by asegmental rack 16, the curvature of which is struck from the pivotalcenter of said leg.

The head 14 consists of a flat transverse strip of metal whose ends arebent rearwardly and attached to the legs 13in any suitable-manner, andis provided with holes or perforations 17, that are separated a distancecorresponding to the distance between each pair of postholes, which, ashereinbefore stated, are located near the top of each of the printedforms of the continuous strips of paper.

Near each end head 1- 1 has the ends of leafsprings 18 attached to itsrear surface adjacent to its ends and these springs asthey extend towardthe center of said head separate slightly therefrom and immediately backof the holes 17 are provided with forwardly projecting pins 19, 19, thatextend through said holes.

. The opposed free ends of the springs pro ject beyond these pins andtheir extremities 20 are grooved longitudinally to convex their forwardsurfaces.

In operation the extracting-frame is designed to be moved downwards andas it approaches the limit of its downward 'movement pins l9 engage andride back of the upper edge of the strip or strips of paper and enterthe postholes in the advanced edges of the printed forms that are inposition to be printed upon. This action of the pins is caused by reasonof the extremities 20 of springs 18, engaging the rear transverselycorrugated cam surfaces 21, 21, of vertically disposed rectangularplates 22, whose lower ends are securely attached to the rear of aplaten 23, which latter extends longitudinally and has its ends attachedto the end-frame 6", 6, of the carrier. The cam surfaces 21 are of suchproportions that when the pins 19 enter the postholes of the paper theywill not, when the feedingframes move upwards, cause the pins toWithdraw entirely from said holes, and, thus, the said paper will beextracted, step by step, as said frame moves upward.

The platen, is preferably, rectangular in cross-section and at its endshas Z-shaped brackets 24,.24, secured thereto, at points about in thesame vertical transverse plane as the ends of head 14. A transversehorizontally disposed fiat metal strip or plate. 25, is secured to andsupported by said brackets. This plate 25 is so positioned that its flatside is vertical and it has a ,com panionplate 26 arranged parallel infront of it, that is spaced apart therefrom by the interposition ofspacing-blocks between the ends thereof to provide a discharge passagethrough which the paper passes as it is extracted. These plates 25 and26 are provided with vertically elongated slots 27, that are separatedthe same distance apart as the holes 17, 17, in head 14 and are locatedin front of the same when the feeding frame is at the lowest limit ofits movement.

The continuous paper strips, a, b, and 0, are threaded through themachine by being passed over the pivotal rock-shaft 28, whose ends aresecured in the rear ends of brackets 12, and then extend forward. downunder the platen and then up in front of the platen I and through thedischarge passage between the plates 25 and 26. The upper edge of theouter plate. 25 of the discharge passage is, say, an inch above theplaten, and when the feeding frame is approaching the lower limits ofits movement, the free end of sprmgs 18 will be drawn to the rear by theengagement of their extremities and of the canrsurfaces 21 and theforward ends of pins 19 will pass back of the advanced edges of the formnext to be printed upon, and will thenwhen said pins are axially in'line with the elongated perforations 27 have reached the apex of theuppercarn surface 21, will ride down the lower mc hned por tion of saidcam and permits said pins to move through the perforations 27 and intothe postholes of the paper strips.

The ends of the rock-shaft 28 extends through the legs 13 0f thefeeding-frame, and a V-shaped-frame 29 that 1s loosely journaled thereonand is retained 1n pos1- tion by a screw 30 tapped longitudinally intothe extremity of said shaft. The length of the legs of said V-shapedframe is greater than the radius of the segmental rack 16, and the endof the uppermost of these legs has a pawl 31 pivoted thereto by means ofa transverse pin 32.. This pawl is kept in constant engagement with theteeth of said rack by means of a coil contraction spring 33, one end ofwhich latter is secured to the pawl and the other to the leg of theV-shaped frame, substantially as shown in F i ure 1 of the drawings.

he end of the spring 33, is connected to pawl 31 through the medium of atransverse pin 34, and said pawl is connected by means of a rearwardlyextending rod 35, to an arm 36, loose on shaft 28 on the inside ofsubstantially as shown in Figure 3 of the drawings, and laps against theparallel surface of a hanger 38. The end of'bar 37 coming in contactwith hanger 38 is pro.- vided with a longitudinal slot 39, and it isretained in engagement with said hanger by means of a screw 40 thatpasses through said slot and is tapped into said hanger so as to permitthe longitudinal movement of the bar. The forward edge of the hanger 38is flanged laterally to provide athumb grasp 41 and so likewise is theforward end of bar 37 to form a purchase for the fingers of theoperator.

The outer end of the lower leg of the V- shaped frame 29, has the rearend of a reciprocal rod 43 pivotally connected thereto by means of acrank-pin 44, and this rod extends forward to one of the arms 45, of aT-shaped lever 46, and is pivoted thereto.

This lever is fulcrumed at its angle to the vice consisting of a roller49 which latter is pivoted to a spring-actuated arm 50 and this arm ispivoted to the portion'of bracket 12, that depends from its'lower edgeto a point below Where said bracket is attached to arm 11 of theend-frame 6 just beyond the toothed edge of the rack. Arm 50 has anextension 51 depending below its pivot. The distance the feeding framecan be moved upwards is determmed by the gage 52, consisting of aU-shaped clip which is adjustable longitudinally on, and can be clampedto the segmental member of rack 16 in any position desired and limit thedownward movement of the rack and feedin frame.

Vhat I claim as new is:

1. In a typewriting machine, the combination with the carrier, and aplaten supported thereby, of; a .vertically reciprocal paper feederconsisting of a U-shaped frame the ends of which are pivotally connectedto said carrier at the rear of said platen, and means thatintermittently move said feeder during the feeding operation, springssecured to the rear of the transverse bar of said frame, and pinssecured to said .springs, and extending through openings'in andprojecting forward beyond said bar, that engage postholes in theadvanced portion of the paper after it has passed the platen.

2. In -a typewriting machine, the combination with the carrier, and aplaten supported thereby, of a vertically reciprocal paper feederconsisting of a U-shaped frame the ends of which are pivotally connectedto said carrier at the rear of said platen, and means thatintermittently move said feeder during the feeding operation, springssecured to the rear of the transverse bar of said frame, pins secured tosaid springs, and extending through openings in and projecting forwardbeyond said bar that engage postholes in the advanced portion of thepaper after it has passed the platen and means that engage said springswhen the frame is near the lower limits of its movement and draw saidpins rearward and then release and permit them to move forward- 3. In atypewriting machine, the combination with the-carrier, and a platensupported thereby, of a vertically reciprocal paper feeder consisting ofa U-shaped frame the ends of which are pivotall connected to saidcarrier at the rear of sai platen, a segmental rack secured to anddepending from one of the legs of said frame whose curvature is struckfrom the axis of the same, and means including a pawl that engages saidrack and intermittently moves said frame upwards.

4. In a typewriting machine, the combination with the carrier, and aplaten supported thereby, of a vertically reciprocal paper feederconsisting of a U-shaped frame the ends of which are pivotally connectedto said carrier at the rear of said platen, a segmental rack secured toand depending from one of the legs of said frame whose curvature isstruck from the axis of the same, an oscillatory U-shaped frame the axisof which alines with that of said U-frame, a pawl pivotally connected tothe end of one of the arms'of said U-frame that engage said rack andmeans for oscillating the same.

5. In a typewriting machine, the combination with the carrier, and aplaten supported thereby, of a vertically reciprocal paper'feederconsisting of a U-shaped frame the ends of which are pivotally connectedto said carrier at the rear of said platen, a segmental rack secured toand depending from one of the legs of said frame whose curvature isstruck from the axis of the same, an oscillatory U-shaped frame the axisof which alines with that of said U-frame, a pawl pivotally connected tothe end of one of the arms of said U-frame that engages said rack, meansfor oscillating the same, and a stop device secured to said segment andadapted to engage the upper arm.of said U-shaped frame and limit theupward movement thereof.

'6. In a typewriting machine, the combination with the carrier, and aplaten supported thereby, of a vertically reciprocal paper feederconsisting of a U-shaped frame the ends of which are pivotally connectedto said carrier at the rear of said platen, a segmental racksecure'd toand depending from one of the legs of said frame whose curvature isstruck from the axis of the same, an oscillatory U-frame, the axis ofwhich alines with that'of said U-frame, a pawl pivotally connected toone. of the arms of said U-frame that constantly presses toward andengages said rack, and means for disengaging said pawl when said feederis moved downwards.

7. In a typewriting machine, the combination with the carrier, and aplaten supported thereby, of a verticallyreciprocal paper feederconsisting of a U-shaped frame the ends of which are pivotally connectedto said carrier at the rear of said platen, a segmental rack secured toand depending from one of the legs of said frame whose curvature isstruck from the axis of the same, an oscillatory U-frame, the axis ofwhich alines with that of said U-frame, a pawl pivotally connected toone of the arms of said U-frame that constantly presses toward andengages said rack, an arm projecting downwards "from the axial supportof said U-frame a manually. operated reciprocal bar for moving said arm,and a rod connecting said arm to said pawl.

8. In a typewriting machine, the combination with the carrier, and aplaten supported thereby of a vertically reciprocal paper feederconsisting of a U-shaped frame the ends of which are pivotally connectedto said carrier at the rear of said platen, a segmental rack secured toand depending from one ofthe legs of said frame whose curvature isstruck from the axis of the same, an oscillatory U-frame, the axis ofwhich alines with that of said U-frame, a pawl pivotally connected toone of the arms of said U-frame a spring connecting said pawl to the armof the U-frame to which it is attached, and means for disengaging saidpawl when said feeder is moved downwards.

9. In a typewriting machine, the combination with the carrier, and aplaten supported thereby, of a vertically reciprocal paper feederconsisting of a U-shaped frame the ends of which are pivotally connectedto said carrier at the rear of said platen, a segmental rack secured toand depending from one of the legs of said frame whose curvature isstruck from the axis of the same, an oscillatory U-sha'ped frame, theaxis of which alines with that of said U-frame, a pawl pivotallyconnected to the end of one of the arms of said U-frame that engagessaid rack, a rod pi'votally secured at one end to the other arm of theU-frame and a manually operated T shaped lever to one of the aliningbranches of which the other end of said rod is connected.

In witness whereof I have hereunto set my hand this 7th day of May 1921.

Louis JENSEN. Witnesses:

W. R. BARKER, Lnwrs BARKER.

